RowNum problem

Dear all,

Under query running perfectly

SELECT ROWNUM AS RANK, name, SALARY, HIRE_DATE (HIRE_DATE SELECT first name, SALARY FROM EMPLOYEE ORDER BY SALARY desc, DESC HIRE_DATE)
WHERE
ROWNUM < = 3

But when I try to find the third line of salary with the following query, then it returns null. Can someone tell me why it returns null and give me the same query.

SELECT ROWNUM AS RANK, name, SALARY, HIRE_DATE (HIRE_DATE SELECT first name, SALARY FROM EMPLOYEE ORDER BY SALARY desc, DESC HIRE_DATE)
WHERE
ROWNUM = 3

Try this

select  * from (select first_name,salary,hiredate,row_number() over(order by salary desc) rn from employee)
Where rn=3

Not tested.

Tags: Database

Similar Questions

Problem with a complete refresh materialized view when using rownum

Hi all
I had a problem with rownum when complete using Refresh
I use rownum when you create the materialized view, and this is the generation properly. But the question was when I even refreshing, rownum was not get sorted in ascending order.
anyone encountered this scenario

rownum is determined as the line came out, also "order by rownum" does absolutely nothing.

http://docs.Oracle.com/CD/B19306_01/server.102/b14200/pseudocolumns009.htm

SQL performance problem associated with rownum.

Dear Experts,
I have a sql
SELECT TEMP.col1, TEMP.col2, TEMP.col3, TEMP.col4, TEMP.col5, ROWNUM, not
(SELECT col1, col2, col3, col4 FROM table1 ORDER BY DESC col4 col5) TEMP WHERE rownum between? and?
When I put the value of range rownum 1 and 100, it works very well. But when I put 101 and 200 no records returned.
So I modified it as fllows
SELECT TEMP.col1, TEMP.col2, TEMP.col3, TEMP.col4, TEMP.col5,NWR No. OF
(SELECT col1, col2, col3, col4, col5, rownum NWR FROM table1 ORDER BY DESC col4) TEMP WHERE NWR between? and?
It works fine and giving results desire. But the issue here is the modified SQL becomes very slow. It gives results in 20 minutes. Although SQL earlier gave results in a few seconds.
Records in table1 is 40 million.
Is there another way to get good performance results accurate?
Your help will be much appreciated.
Kind regards
DD

Hi try this... If you want that data should be in the specific order (as order by desc col4, then you can use analytical ROW_NUMBER() function as below). Try it out below and let me know in case of any problems

SELECT TEMP.col1,

TEMP.col2,

TEMP.col3,

TEMP.col4,

TEMP.col5,

NWR NO.

FROM (SELECT col1,

col2,

col3,

COL4,

col5,

ROW_NUMBER() over (ORDER BY DESC of col4) rno

FROM table1)

NWR WHERE between 101 AND 200;

(GOLD)

SELECT TEMP.col1,

TEMP.col2,

TEMP.col3,

TEMP.col4,

TEMP.col5,

NWR NO.

FROM (SELECT col1,

col2,

col3,

COL4,

col5,

ROW_NUMBER() OVER(ORDER BY col4 DESC) NWR

FROM table1)

WHERE NWR<=>

Problem with ROWNUM
Hello, I have this problem

A PL/SQL procedure is a piece of code whitch is supposed to return ONE LINE else it will go wrong. This code returns multiple lines, so there is a limit
"where ROWNUM < 2.

Now here it is a strange thing. The main choose, let's say for example

"select Field1 from table1.
where field1 = 'something'
and rownum < 2 "

So far, everything is ok

I had to change this selection and add the clause OR to WHERE. Now it's like

"select Field1 from table1.
where field1 = 'something'
OR FIELD1 = 'Gisele '.
and rownum < 2 "

OK, here it crashes, I tried to have lunch on the browser but it always returns more than ONE LINE and the procedure will by mistake. Is there something wrong with the GOLD? How is it possible that if I add the ROWNUM clause after the place WHERE it will not turn the line I ask? How can I solve this problem? Thank you.
```
select field1 from table1
where (field1='something'
OR FIELD1='somethingelse')--check here
and rownum<2
```
Ravi Kumar

Any problem with using WHERE ROWNUM = 1?
DB version: 10 gr 2

When you want to get a single row of a resultset, is there something wrong in using
```
 where rownum = 1
 
```
as in
```
 select ename,sal from emp where rownum=1
 
```
Nothing wrong but the result is the problem is not deterministic. use of ROWNUM = 1 do not guarantee the same output every time.

Problem with the Rownum selection

Hello

  1* select articles_id,subject from Articles where active=1 and cat_id=2 order by articles_id desc
SQL> /

ARTICLES_ID SUBJECT
----------- ----------------------------------------------------------------------------------------
          7 Article-7
          6 Article-6
          5 Article-5
          4 Article-4
          3 Article-3
          2 Article-2
          1 Article-1

7 rows selected.


  1* select articles_id,subject from Articles where active=1 and cat_id=2 and rownum<2 order by arti
SQL> /

ARTICLES_ID SUBJECT
----------- ----------------------------------------------------------------------------------------
          2 Article-2

Why rownum < 2 does not work?

Best regards

Do not use the command by after rownum, otherwise rownum will be unordered.
Try this:

select * from (select articles_id,subject from Articles where active=1 and cat_id=2 order by arti) where rownum<2

rownum should be the last.

Saad,

Rownum = 1 strange problem

Hi all

I have a really strange behavior using rownum in a procedure. If I run the query outside of the procedure it returns a line, if I run the query in a procedure with a select into statement, I get a no found error of data:

SQL> SELECT *
  2    FROM v$version
  3   WHERE rownum = 1;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bi

SQL> SELECT l.linkid,
  2         l.name
  3    FROM serviceobject so,
  4         circuit c,
  5         node n,
  6         port p,
  7         LINK l
  8   WHERE (p.portid = l.link2sourceport OR p.portid = l.link2destport)
  9     AND p.port2node = n.nodeid
 10     AND n.node2nodedef = 1950000041 -- Generic Splitter
 11     AND (c.circuit2startnode = n.nodeid OR c.circuit2endnode = n.nodeid)
 12     AND so.serviceobject2object = c.circuitid
 13     AND so.serviceobject2dimobject = 3 -- Circuit
 14     AND so.serviceobject2service = 13182742 -- Service Id
 15     AND ROWNUM = 1;

    LINKID NAME
---------- --------------------------------------------------
  13700090 1600537676

SQL> DECLARE
  2    v_linkid NUMBER;
  3    v_name   VARCHAR2(50);
  4  BEGIN
  5    SELECT l.linkid,
  6           l.name
  7      INTO v_linkid,
  8           v_name
  9      FROM serviceobject so,
 10           circuit       c,
 11           node          n,
 12           port          p,
 13           link          l
 14     WHERE (p.portid = l.link2sourceport OR p.portid = l.link2destport)
 15       AND p.port2node = n.nodeid
 16       AND n.node2nodedef = 1950000041 -- Generic Splitter
 17       AND (c.circuit2startnode = n.nodeid OR c.circuit2endnode = n.nodeid)
 18       AND so.serviceobject2object = c.circuitid
 19       AND so.serviceobject2dimobject = 3 -- Circuit
 20       AND so.serviceobject2service = 13182742 -- Service Id
 21       AND rownum = 1;
 22  END;
 23  /
DECLARE
*
ERROR at line 1:
ORA-01403: no data found
ORA-06512: at line 5

Does anyone have an idea why this is happening? Am I missing something?

Thanks in advance,
Manuel Vidigal

There are also several bugs related to the operations of the bitmap. You can see if it's the cause by turning off the plans of the bitmap:

ALTER session statement "_b_tree_bitmap_plans" = false

Problem I have TO solve with the query: PREV calculation to the current record

Hi all

My version of db:

Oracle Database 11 g Enterprise Edition Release 11.2.0.3.0 - 64 bit Production

I have the problem to solve with a request (MUST BE a SELECT statement), but I do not understand how... I tried with the analytical function but... not just:

I have this table:

rownum	KEY1	KEY2	A3	PERC	IMP
1	A123	RISCP	01/01/2014	10	100
2	A123	RISCP	02/01/2014	11	100
3	A123	RISCP	03/01/2014	15	100

Application of expected result:

RESULTS	KEY1	KEY2	A3	PERC	IMP
90	A123	RISCP	01/01/2014	10	100
80.1	A123	RISCP	02/01/2014	11	100
68.085	A123	RISCP	03/01/2014	15	100

Starts recording with rownum 1 (the lower date with the same KEY) I do: imp - (100 imp * perc), where imp = 100 and PERC = 10, so the first result of the calculation is: 90

Now I have to go to record 2, so I do 90 - 11%: imp - (100 imp * perc), where imp = 90 and PERC = 11, results is 80.1

Now I have to go to the 3d recording, so I 80.1 - 15%: imp - (100 imp * perc), where imp = 80.1 and perc = 15, results is 68 085

So I have to use the previous to the current PERC.

I'm sure it's possible through a combination of funcion analytical!

Thanks to anyone who can help me!

with

data in the form of

(select 1 rn "A123" key1, to_date('01-JAN-2014','DD-MON-YYYY') dat, 10 perc, 100 imp union double all the)

Select option 2, 'A123', to_date (February 1, 2014 "," MON-DD-YYYY ""), 11, 100 of all the double union

Select 3, 'A123', to_date (March 1, 2014 "," MON-DD-YYYY ""), 15, 100 double

Solver (RN, Key1, DAT, PERC, IMP, result) as

(select rn, key1, dat, perc, imp, imp * (1 - 0.01 * perc))

from the data

where rn = 1

Union of all the

Select d.rn, d.key1, d.dat, d.perc, d.imp, s.result * (1 - 0.01 * d.perc)

s Solver,

data d

where d.rn = s.rn + 1

)

Select *.

the Solver

RN	KEY1	DAT	PERC	IMP	RESULT
1	A123	01/01/2014	10	100	90
2	A123	01/02/2014	11	100	80.1
3	A123	01/03/2014	15	100	68.085

Concerning

Etbin

SDO_RELATE within PL/SQL query with rownum clause runs slowly on 12 c - works great on 10 g

Hello

I use the database 12.1.0.2 with a node 2 RAC on Windows.

I am struck by a really weird performance problem with a particular query. Bear with me while I try to explain...

I have a chart with lines 30 sdo_geometry million, in 7 partitions with a local partitioned spatial index divided. Called BIG_PARTITIONED_TABLE for this example.

I query the table to search for one line with a geometry that is equal to the geometry of my request. In this case I use sdo_relate with "mask = equal". Instantly returns:

SQL> select id, geometry
  2  from       BIG_PARTITIONED_TABLE o
  3  where      sdo_relate(o.geometry, sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
  4     SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272)), 'mask=equal') = 'TRUE'
  5  and rownum = 1;

        ID
----------
GEOMETRY(SDO_GTYPE, SDO_SRID, SDO_POINT(X, Y, Z), SDO_ELEM_INFO, SDO_ORDINATES)
-------------------------------------------------------------------------------
2.5405E+12
SDO_GEOMETRY(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272))

Elapsed: 00:00:00.10

But if I put the same query in PL/SQL, so it takes 21 seconds:

SQL> declare
  2     l_id number;
  3     l_geom sdo_geometry;
  4     l_window_geom sdo_geometry;
  5  begin
  6     l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
  7             SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272));
  8
  9     select id, geometry
10     into l_id, l_geom
11     from    BIG_PARTITIONED_TABLE o
12     where   sdo_relate(o.geometry, l_window_geom, 'mask=equal') = 'TRUE'
13     and rownum = 1;
14
15  end;
16  /

PL/SQL procedure successfully completed.

Elapsed: 00:00:21.13

If I remove the "rownum = 1", then it returns instantly:

SQL> declare
  2     l_id number;
  3     l_geom sdo_geometry;
  4     l_window_geom sdo_geometry;
  5  begin
  6     l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
  7             SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272));
  8
  9     select id, geometry
10     into l_id, l_geom
11     from    BIG_PARTITIONED_TABLE o
12     where   sdo_relate(o.geometry, l_window_geom, 'mask=equal') = 'TRUE';
13
14  end;
15  /

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.03

If using sdo_equal instead of sdo_relate and keep the "rownum = 1", then it returns instantly.

SQL> declare
  2     l_id number;
  3     l_geom sdo_geometry;
  4     l_window_geom sdo_geometry;
  5  begin
  6     l_window_geom := sdo_geometry(2002, 2157, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1),
  7             SDO_ORDINATE_ARRAY(604853.595, 692379.864, 604879.046, 692350.272));
  8
  9     select id, geometry
10     into l_id, l_geom
11     from    BIG_PARTITIONED_TABLE o
12     where   sdo_equal(o.geometry, l_window_geom) = 'TRUE'
13     and rownum = 1;
14
15  end;
16  /

PL/SQL procedure successfully completed.

Elapsed: 00:00:00.13

Here is a comparison of the plans to explain. First, here's the good thing, that is using the spatial index (BIG_PARTITIONED_TABLE_SPIND):

select id, GEOMETRY
FROM
BIG_PARTITIONED_TABLE O WHERE SDO_EQUAL(O.GEOMETRY, :B1 ) = 'TRUE'
AND ROWNUM = 1

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.00       0.00          0          0          0           0
Execute      1      0.01       0.02          0         39          0           0
Fetch        1      0.00       0.01          0         31          0           1
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        3      0.01       0.04          0         70          0           1

Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 263     (recursive depth: 1)
Number of plan statistics captured: 1

Rows (1st) Rows (avg) Rows (max)  Row Source Operation
---------- ---------- ----------  ---------------------------------------------------
         1          1          1  COUNT STOPKEY (cr=99 pr=0 pw=0 time=43307 us)
         1          1          1   PARTITION RANGE ALL PARTITION: 1 7 (cr=99 pr=0 pw=0 time=43297 us cost=0 size=66 card=1)
         1          1          1    TABLE ACCESS BY LOCAL INDEX ROWID BIG_PARTITIONED_TABLE PARTITION: 1 7 (cr=99 pr=0 pw=0 time=43280 us cost=0 size=66 card=1)
         1          1          1     DOMAIN INDEX  BIG_PARTITIONED_TABLE_SPIND (cr=98 pr=0 pw=0 time=43250 us)

Then the slow that does not use the spatial index.

select id, GEOMETRY
FROM
BIG_PARTITIONED_TABLE O WHERE SDO_RELATE(O.GEOMETRY, :B1 , 'mask=equal') = 'TRUE'
  AND ROWNUM = 1

call     count       cpu    elapsed       disk      query    current        rows
------- ------  -------- ---------- ---------- ---------- ----------  ----------
Parse        1      0.01       0.00          0          0          0           0
Execute      1      0.03       0.03          0       1123          0           0
Fetch        1     24.25      24.25          0     499429          0           1
------- ------  -------- ---------- ---------- ---------- ----------  ----------
total        3     24.30      24.29          0     500552          0           1

Misses in library cache during parse: 1
Misses in library cache during execute: 1
Optimizer mode: ALL_ROWS
Parsing user id: 263     (recursive depth: 1)
Number of plan statistics captured: 1

Rows (1st) Rows (avg) Rows (max)  Row Source Operation
---------- ---------- ----------  ---------------------------------------------------
         1          1          1  COUNT STOPKEY (cr=499532 pr=0 pw=0 time=24289612 us)
         1          1          1   HASH JOIN RIGHT SEMI (cr=499532 pr=0 pw=0 time=24289586 us cost=32 size=144 card=1)
         1          1          1    VIEW  VW_NSO_1 (cr=103 pr=0 pw=0 time=31110 us cost=29 size=98016 card=8168)
         1          1          1     COLLECTION ITERATOR PICKLER FETCH SDO_PQRY (cr=103 pr=0 pw=0 time=31104 us cost=29 size=16336 card=8168)
  16914892   16914892   16914892    PARTITION RANGE ALL PARTITION: 1 7 (cr=499429 pr=0 pw=0 time=28678375 us cost=3 size=6600 card=100)
  16914892   16914892   16914892     TABLE ACCESS FULL BIG_PARTITIONED_TABLE PARTITION: 1 7 (cr=499429 pr=0 pw=0 time=23406547 us cost=3 size=6600 card=100)

I tried adding an indication / * + index (o BIG_PARTITIONED_TABLE_SPIND) * / but that did not help.

I am struck this issue during testing of upgrade 10.2.0.5 to 12.1.0.2. The query works perfectly on 10g - we note only that this question on 12 c.

I can't use sdo_equal as the real mask that we want is equal + dommagescausdspar + covers. I'm just using equal here to simplify the test.

I use "rownum = 1" because I want to just the first result. In practice I can rewrite probably is a FOR LOOP, I get out after the first result, but that seems all just awful.

Any ideas? If anyone has seen anything like this before? Its an optimizer delivers really so I'm going to cross post the SQL Forum after a certain time, but thought I would post it here first.

Thank you

John

Hi John,.

Can you please try the following before your slow queries event?

"ALTER session set events ' trace 54669 name context forever."

Thank you

Ying

Question ROWNUM

HI team,
I get lines of a table TAB1 containing 1.6 million given. When I use the following query I can easily get the details...
Select * from abc. Tab1 where rx_tx_id = 376741709 and rownum between 1-199999
order of time_stamp;
BUT when we use other values other than 1, it will not look for all of the lines and NO error also... Please help me to fix this problem.
Select * from abc. Tab1 where rx_tx_id = 376741709 and rownum between 2 and 199999
order of time_stamp;

Hello

I suggest to look at the documentation of ROWNUM:

http://docs.Oracle.com/CD/B19306_01/server.102/b14200/pseudocolumns009.htm

From this link: "test Conditions for ROWNUM value to a positive integer is always wrong."

Your query can be written in the following form:

Select * from abc. Tab1 where rx_tx_id = 376741709 and (rownum > = 2 and rownum)<=>

order of time_stamp;

New from the documentation link... the first line is extracted and assigned ROWNUM = 1. This does not meet the condition if it is ignored. The next line is extracted and assigned ROWNUM = 1. This does not meet the condition if it is ignored. This continues until you have no lines left in the process.

You can try to use an analytical function to help out here. Something like:

Select * from (select TAB1.*, dense_rank() (time_stamp order) as Dr. of ABC. Tab1 where rx_tx_id = 37674170) where Dr. between 2 and 199999.

Others may have better ideas, but maybe that's something in the meantime, you can explore.

rownum

Hi all

I use

Connected to Oracle Database 11g Express Edition Release 11.2.0.2.0

I use the Oracle HR schema

I'm learning the rownum with order of

In the two order statement is in even

but a 2nd has ROWNUM < 6

The result set is different

Please help me understand the problem

SQL > SELECT LAST_NAME, HIRE_DATE

2 EMPLOYEES

3 ORDER OF HIRE_DATE

LAST_NAME HIRE_DATE

------------------------- -----------

De Haan 13/01/2001

Gietz 06/07/2002

Baer 06/07/2002

Mavris 06/07/2002

Higgins 07/06/2002

Faviet 16/08/2002

SQL > SELECT LAST_NAME, HIRE_DATE

2 EMPLOYEES

3. WHERE ROWNUM < 6

4 ORDER OF HIRE_DATE

LAST_NAME HIRE_DATE

------------------------- -----------

De Haan 13/01/2001

King 17/06/2003

Kochhar 21/09/2005

Hunold 03/01/2006

Ernst 21/05/2007

Thank you

Hello

second one you 5 random * (in theory at least) the lines you sort. If you need to sort the rows and get top 5 can do sorting in inline mode and which filter with rownum<>

-- without ordering 5 rows
SELECT LAST_NAME,HIRE_DATE
FROM EMPLOYEES
WHERE ROWNUM < 6
;
-- order those 5 rows
SELECT LAST_NAME,HIRE_DATE
FROM EMPLOYEES
WHERE ROWNUM < 6
ORDER BY HIRE_DATE
;
-- select all employees, sort them and then return top 5 of them
SELECT * FROM (
  SELECT LAST_NAME,HIRE_DATE
  FROM EMPLOYEES
  ORDER BY HIRE_DATE
)
WHERE ROWNUM < 6
;

LAST_NAME                 HIRE_DATE
------------------------- ----------
King                      17.06.2003
Kochhar                   21.09.2005
De Haan                   13.01.2001
Hunold                    03.01.2006
Ernst                     21.05.2007 

LAST_NAME                 HIRE_DATE
------------------------- ----------
De Haan                   13.01.2001
King                      17.06.2003
Kochhar                   21.09.2005
Hunold                    03.01.2006
Ernst                     21.05.2007 

LAST_NAME                 HIRE_DATE
------------------------- ----------
De Haan                   13.01.2001
Mavris                    07.06.2002
Gietz                     07.06.2002
Higgins                   07.06.2002
Baer                      07.06.2002

* randomly in this context means that there is no particular order what rows is returned. If the query is repeated, it seems that the lines in the same order each time, but this could change when data is modified in the table.

Locking during the generation and the online option to avoid problems

Hi Experts,

In our suite of applications, schemas are shared among several applications, and even when there is a deployment of an application, the other application remains upward. In this process, we are facing problems of locking. For example, when creating indexes, I get the error "resource busy and acquired with no expectations. This post is specific to this point on error when creating index (change the design of the app etc is out of reach for me currently).

I was checking the "online" option of create index and I was wondering if that helps. It looks promising for me. When we have large tables (50 million more and creating indexes on them takes about 5 minutes and at the same time we have another app doing short transactions - who commit in 5 seconds, then creating index 'with the option' can help - is what I was asking.)

Here is an example of what I've tried:
```
-- first create a table with a few million rows:

SET SERVEROUTPUT ON

DECLARE
  v_sql VARCHAR2 (200);
BEGIN
  v_sql := 'create table test as select * from dba_objects';

  EXECUTE IMMEDIATE v_sql;

  FOR i IN 1 .. 5
  LOOP
  v_sql := 'insert into test select * from test';

  EXECUTE IMMEDIATE v_sql;

  COMMIT;
  END LOOP;
END;
/

--Now in session 1:
---------


create index ti1 on test(OWNER,OBJECT_NAME,SUBOBJECT_NAME,OBJECT_ID,DATA_OBJECT_ID,OBJECT_TYPE,CREATED,LAST_DDL_TIME,TIMESTAMP,STATUS,TEMPORARY,GENERATED,SECONDARY,NAMESPACE)
online;

session 2:
------------
DELETE FROM TEST WHERE ROWNUM<1000;

commit;

DELETE FROM TEST WHERE ROWNUM<40200;
rollback;

--etc.
```
I find that deletions, etc. in the second session is done (they follow by commit and they take a few seconds) with this option 'create an index online '. The option 'create index' is also no error with the error ORA-«resource busy...» ». So what a better way to create indexes to avoid locking issues? Note that is is very good for us to have the creation of index take more time for what's important is that they are not lacking in critical production deployments.

Are there other possible implications (-except that it takes more time to create the index with the option 'online'), that one should be aware of? Any known issues or is there any other glitches with the creation of online index?

I will be grateful for any views on that.

What is your version of DB full?

In our suite of applications, schemas are shared among several applications, and even when there is a deployment of an application, the other application remains upward. In this process, we are facing problems of locking. For example, when creating indexes, I get the error "resource busy and acquired with no expectations.

OK-, this exception is not surprising. To create or rebuild an index, Oracle has a lock on the base table. He can't do that if other users perform DML on the table - it must wait.

And before 11 g ANY other session that then tries to perform DML on the base table that oracle wait will also block.

I was checking the "online" option of create index and I was wondering if that helps.

Well, if you do not use the clause of 'ONLINE' you must do that maintenance CONNECTION or you now cause other sessions cling while creating/reconstruction is made;

It looks promising for me. When we have large tables (50 million more and creating indexes on them takes about 5 minutes and at the same time we have another app doing short transactions - who commit in 5 seconds, then creating index 'with the option' can help - is what I was asking.)

Yes - it should help. But he cannot eliminate the problem entirely.

See this article by the Index indicated Richard expert Foote (there are many other related articles index also):

https://richardfoote.WordPress.com/2008/02/11/index-create-and-rebuild-locking-improvements-in-11g-ch-ch-ch-changes/

What is the problem with my sql says invalid identifier

CREATE THE TABLE PROJECT

(proj # NUMBER (6) NOT NULL,)

p_name VARCHAR2 (15) NOT NULL,

p_desc VARCHAR2 (150) NOT NULL,

p_budget NUMBER (8).

CONSTRAINT project_proj PRIMARY KEY #pname_pk (proj #, p_name));

CREATE TABLE WORK ORDERS

(wo # NUMBER (6))

proj # NUMBER (6).

wo_desc VARCHAR2 (150).

wo_assigned VARCHAR2 (30),

wo_hours NUMBER (5),

wo_start DATE,

wo_due DATE,

wo_complete char (1),

CONSTRAINT workorders_wo #_pk KEY(wo#) primary SCHOOL.

CONSTRAINT workorders_wo #_fk FOREIGN KEY (proj #)

REFERENCES PROJECT (proj #).

Workorders_wodesc_uk of CONSTRAINT UNIQUE (wo_desc).

CONSTRAINT workorders_hours_ck CHECK (wo_hours > = 0).

CONSTRAINT workorders_wocomplete_ck CHECK (wo_complete in ('Y', 'n')));

Whenever you have an error message the best thing to do is post a copy of your session with your statement sqlplus output. Like this.

I have no problem with your first statement regarding the syntax and semantics

SQL> create table project
  2  (
  3  proj# number(6) not null,
  4  p_name varchar2(15)not null,
  5  p_desc varchar2(150)not null,
  6  p_budget number(8),
  7  constraint project_proj#pname_pk primary key (proj#, p_name)
  8  );

Table created.

Second table a problem that his tent to make reference to project.proj #. But the problem is that it doesn't have a primary or unique key defined in this topic.

SQL> create table workorders
  2  (
  3  wo# number(6),
  4  proj# number(6),
  5  wo_desc varchar2(150),
  6  wo_assigned varchar2(30),
  7  wo_hours number(5),
  8  wo_start date,
  9  wo_due date,
 10  wo_complete char(1),
 11  constraint workorders_wo#_pk primary key(wo#),
 12  constraint workorders_wo#_fk foreign key (proj#)
 13  references project (proj#),
 14  constraint workorders_wodesc_uk unique (wo_desc),
 15  constraint workorders_hours_ck check (wo_hours >=0),
 16  constraint workorders_wocomplete_ck check (wo_complete in ('y' ,'n'))
 17  );
references project (proj#),
                    *
ERROR at line 13:
ORA-02270: no matching unique or primary key for this column-list

I defined a

SQL> alter table project add constraint project_proj#_uk unique (proj#);

Table altered.

Now, the second table is also created correctly

SQL> create table workorders
  2  (
  3  wo# number(6),
  4  proj# number(6),
  5  wo_desc varchar2(150),
  6  wo_assigned varchar2(30),
  7  wo_hours number(5),
  8  wo_start date,
  9  wo_due date,
 10  wo_complete char(1),
 11  constraint workorders_wo#_pk primary key(wo#),
 12  constraint workorders_wo#_fk foreign key (proj#)
 13  references project (proj#),
 14  constraint workorders_wodesc_uk unique (wo_desc),
 15  constraint workorders_hours_ck check (wo_hours >=0),
 16  constraint workorders_wocomplete_ck check (wo_complete in ('y' ,'n'))
 17  );

Table created.

SQL>

My Version of DB's

SQL> select * from v$version where rownum = 1;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bi

SQL>

#ROWNUM # does not work in the APEX 4.2 update

We have updated our development servers Oracle 11 g of Application Express version 4.2.1.00.08 to the Application Express version 4.2.6.00.03 . I have an application page that uses a tabular form with an image with the link button that javascript:$.event.trigger('SendEvent',String('000#ROWNUM#'));
This sends the Rownum to the event to run a process on this line. On the 4.2.1 break the link gives the rownum. On the 4.2.6 version she return #ROWNUM #.
I exported the production (4.2.1) that works and any request in another application in the development workspace that does not work. I also changed the button image for the html button and the problem is still there.
A that someone has encountered this problem and found a resolution?
Lawrence E. Koss

This has been determined to be a bug in the 4.26 release and 5.0. Oracle has released a fix.

Need help with rownum query.

Hello guys,.
I'm working on this SQL charly, it's pretty simple and it worked very well, but then I tried to 'Join' a table to it and now I can't make it work.
The following SQL code works here.
Select *.
Of
(select a.*, rownum rnum
Of
(select a.field1, a.field2, a.field3, b.field4, b.field5, b.field6,
b.Field7, b.field8, b.field9, b.field10, b.field11, b.field12,
b.Field13, b.field14, b.field15, b.field16, b.field17,
b.field19, b.field20, b.field21, b.field22, b.veh_field22
from SCHEMA.tablename has,
/ * attach * / SCHEMA.tablename b
order of a.tablename_ID) a
where rownum < = 150
)
where rnum > = 147;
But, when I try to JOIN the SCHEMA.tablename b it tells me that I should add a "right parenthesis.
Will this work ROWNUM query even when you join other tables, or through it the fact off the coast in any way?
Thank you
Xev.

Xev,

I tried to reproduce your problem, but could not. Since you have not published the scripts required, I worked on your script schema SCOTT and its working fine.

SELECT * FROM

(

SELECT a.*, rownum rnum

Of

(SELECT e.ename,

d.DNAME

FROM scott.emp e,.

Scott.Dept d

ORDER BY e.deptno) a

WHERE rownum<>

WHERE rnum > = 10;

OUTPUT:

ENAME DNAME RNUM

---------- -------------- ----------

CLARK RESEARCH 10

MILLER ACCOUNTING 11

KING OF ACCOUNTING 12

SMITH, ACCOUNTANT 13

JONES, ACCOUNTING 14

RowNum problem

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